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Question

Give the reasons and differences between the Thomson's model of atom and the present model of atom.


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Solution

Differences between the Thomson's model of the atom and the present model of atom:

Thomson's model

Present model

1. Thomson's model also called the Plum Pudding model explains that electrons are embedded in a solid positively charged sphere.1. Modern model of the atom also called Bohr's model explains that electrons are located in the orbit around the nucleus.
2. Thomson's model does not give any information about the nucleus.2. Modern model of the atom gives the location of the nucleus in an atom.
3. Thomson's model does not give any detail about the orbitals in an atom.3. Modern model provides detail about the orbital and explains how electrons are located in these orbitals.
4. Thomson's model explains that the mass of an atom is the mass of a positively charged solid sphere where electrons are embedded.4. According to the modern atomic model mass of an atom is concentrated in the nucleus of the atom.

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